Improve scan authorizations behavior
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Key: ACCUMULO-246
URL: https://issues.apache.org/jira/browse/ACCUMULO-246
Project: Accumulo
Issue Type: Task
Components: client
Reporter: Billie Rinaldi
When a user creates a scanner a set of Authorizations is passed. If the
authorizations passed to the scanner are not a subset of the user's
authorizations, then an exception is thrown. An alternative would be to
intersect the set of scan authorizations with the user's authorizations. Many
users have had trouble understanding the "silent intersection" behavior, which
resulted in switching to throwing an Exception. However, in situations where
the user's authorizations are lazily updated, and for very long running scans,
intersection would be preferable. Possible fixes are 1) adding a flag to
indicate whether to intersect or throw an exception or 2) making it easier for
the user to perform the intersection manually (which would fix some issues, but
not the long-running scans).
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